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Quark-Exchange Mechanism of $γd \to np$ Reaction At 2-6 GeV

Bruno Julia-Diaz·T. -S. H. Lee
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Abstract

Within the constituent quark model, we examine the extent to which the deuteron photo-disintegration at 2-6 GeV can be described by the quark-exchange mechanism. With the parameters constrained by the $np$ scattering, the calculated differential cross sections disagree with the data in both magnitude and energy-dependence. The results can be improved if we use a smaller size parameter for quark wavefunctions. We also find that the on-shell approximation used in a previous investigation is not accurate

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Bruno Julia-Diaz, T. -S. H. Lee. 2002-10-28. Quark-Exchange Mechanism of $γd \to np$ Reaction At 2-6 GeV. https://doi.org/10.1142/s0217732303010247

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